finding source code or source file of a typical bash function

$type -a signals
bash: type: signals: not found
$type -a _signals
_signals is a function
_signals () 
{ 
    local -a sigs=($( compgen -P "$1" -A signal "SIG${cur#$1}" ));
    COMPREPLY+=("${sigs[@]/#${1}SIG/${1}}")
}
$declare -F _signals 
_signals
$shopt -s extdebug
$declare -F _signals 
_signals 862 /usr/share/bash-completion/bash_completion
$declare -F _command
_command 1732 /usr/share/bash-completion/bash_completion
$declare -F compgen
$declare -F _grub_dirs
$declare -F _grub_dir
$shopt -s extdebug
$declare -F _grub_dir
$declare -F _grub_dirs
$declare -F __grub_dir
__grub_dir 20 /etc/bash_completion.d/grub
$

$type __grub_dir __grub_dir is a function __grub_dir () { local i c=1 boot_dir; for ((c=1; c <= ${#COMP_WORDS[@]}; c++ )) do i="${COMP_WORDS[c]}"; case "$i" in --boot-directory) c=$((++c)); i="${COMP_WORDS[c]}"; boot_dir="${i##*=}"; break ;; esac; done; boot_dir=${boot_dir-/boot}; echo "${boot_dir%/}/grub" } $__grub_dir /boot/grub $__grub_dir --help /boot/grub $ech0 $? bash: ech0: command not found $echo $? 127 $__grub_dir --help /boot/grub $echo $? 0 $


$_command bash: COMP_WORDS: bad array subscript bash: compopt: not currently executing completion function bash: compopt: not currently executing completion function bash: compopt: not currently executing completion function bash: compopt: not currently executing completion function bash: compopt: not currently executing completion function bash: compopt: not currently executing completion function bash: compopt: not currently executing completion function bash: compopt: not currently executing completion function bash: compopt: not currently executing completion function bash: compopt: not currently executing completion function bash: compopt: not currently executing completion function bash: compopt: not currently executing completion function bash: compopt: not currently executing completion function bash: compopt: not currently executing completion function bash: compopt: not currently executing completion function bash: compopt: not currently executing completion function bash: compopt: not currently executing completion function bash: compopt: not currently executing completion function bash: compopt: not currently executing completion function bash: compopt: not currently executing completion function bash: compopt: not currently executing completion function bash: compopt: not currently executing completion function bash: compopt: not currently executing completion function bash: compopt: not currently executing completion function $type _command _command is a function _command () { local offset i; offset=1; for ((i=1; i <= COMP_CWORD; i++ )) do if [[ "${COMP_WORDS[i]}" != -* ]]; then offset=$i; break; fi; done; _command_offset $offset } $type -a _command _command is a function _command () { local offset i; offset=1; for ((i=1; i <= COMP_CWORD; i++ )) do if [[ "${COMP_WORDS[i]}" != -* ]]; then offset=$i; break; fi; done; _command_offset $offset } $